SMPP & MM4

The Short Message Peer-to-Peer (SMPP) is an open, industry standard protocol widely used by the telecommunication industry.

SMPP is desinged to provide a flexible data communication interface for the transfer of SMS messages between Short Message Service Centeres (SMSC), Routing Entities (RE), and SMS Application Systems (or External Short Messaging Entities (ESME)).

SMPP is an application protocol over TCP/IP, which allows fast and reliable delivery of SMS messages.

(For more about SMPP, please refer https://en.wikipedia.org/wiki/Short_Message_Peer-to-Peer)

Supported PDUs

bind_transmitter
bind_receiver
bind_tranceiver
unbind
submit_sm
data_sm
deliver_sm
enquire_link

Data Coding Schemes

0 or 1 : ASCII
3 : Latin 1
8 : UCS2
14: KSC5601

Deliver Report Format

"id:<message_id> sub:<message_sub> dlvrd:<message_dlvrd> submit date:<message_submit_date> done date:<message_done_date> stat:<message_stat> err:<message_err>"

Deliver Statuses

DELIVRD
UNDELIV
REJECTED

Reference 2 : https://en.wikipedia.org/wiki/Short_Message_Peer-to-Peer

MM4?

MM4 : the interface between two MMSCs (using SMTP)

MM4 is the interface used to exchange messages between two different MMSCs. These MMSCs are generally located in two Mobile Networks.

This interface is also known as the MMSR interface in the Wireless Application Protocol (WAP) and the Open Mobile Alliance (OMA) standards.

For more information on MM4 : https://en.wikipedia.org/wiki/MMS_Architecture